you guys think this is okay for an aquarium???
http://www.tractorsupply.com/black-diamond-20-40-blasting-media-50-lb--3905403
http://www.tractorsupply.com/black-diamond-20-40-blasting-media-50-lb--3905403
This blasting media is a mix of crystalline silica and coal slag. NOT recommended for use in aquaria.
I've been using it in this tank for a month or so now i guess ,i'm no expert on sand by no means but i did alot of reading before i threw a few hundred dollars of fish in there ....but i'm sure @oddball knows way more than me hes been at it alot longer@charlie how long have you been using it?